org.lcsim.recon.tracking.vsegment.hit

Interface TrackerHit

All Known Implementing Classes:

TrackerHitAdapter, TrackerHitPoint, TrackerHitSegment

public interface TrackerHit

Tracker hit object to be used by a fitter. TrackerHit can represent either a point-like (pixel) or a segment-like (strip) object. Each hit has a local reference frame (u,v,w) associated with it (reference frame of the Sensor object the hit belongs to). U is the measurement direction, V is along the length of the strip, W = U x V.

Version:

$Id: TrackerHit.java,v 1.1 2008/12/06 21:53:44 onoprien Exp $

Author:

D.Onoprienko

Method Summary

Methods

Modifier and Type	Method and Description
TrackerCluster	getCluster() Points back to TrackerCluster from which this hit was produced.
SymmetricMatrix	getCovMatrix() Returns covariance matrix of the hit in global reference frame.
double	getLength() Returns length of the segment defining the hit.
SymmetricMatrix	getLocalCovMatrix() Returns covariance matrix in local frame of the Sensor.
Hep3Vector	getLocalPosition() Returns position of the hit in local reference frame of the Sensor.
SpacePointVector	getLocalSegment() Returns SpacePointVector pointing from start to end of the segment defining the hit in the local reference frame.
Hep3Vector	getPosition() Returns position of the hit in global reference frame.
SpacePointVector	getSegment() Returns SpacePointVector pointing from start to end of the segment defining the hit in the global reference frame.
Sensor	getSensor() Returns Sensor object for this hit.
double	getSignal() Returns signal amplitude associated with this hit.
double	getTime() Returns time associated with this hit.

Method Detail

getLocalPosition

Hep3Vector getLocalPosition()

Returns position of the hit in local reference frame of the Sensor. For a segment-like hit, this is the center of the segment.

getLocalCovMatrix

SymmetricMatrix getLocalCovMatrix()

Returns covariance matrix in local frame of the Sensor.

getLocalSegment

SpacePointVector getLocalSegment()

Returns SpacePointVector pointing from start to end of the segment defining the hit in the local reference frame.

getPosition

Hep3Vector getPosition()

Returns position of the hit in global reference frame. For a segment-like hit, this is the center of the segment.

getCovMatrix

SymmetricMatrix getCovMatrix()

Returns covariance matrix of the hit in global reference frame.

getSegment

SpacePointVector getSegment()

Returns SpacePointVector pointing from start to end of the segment defining the hit in the global reference frame.

getLength

double getLength()

Returns length of the segment defining the hit.

getSignal

double getSignal()

Returns signal amplitude associated with this hit.

getTime

double getTime()

Returns time associated with this hit.

getSensor

Sensor getSensor()

Returns Sensor object for this hit.

getCluster

TrackerCluster getCluster()

Points back to TrackerCluster from which this hit was produced.